code: def main(cmd=None):
      parser = get_parser()
      args = parser.parse_args(cmd)
      if not hasattr(args, "contents"):
          parser.print_help()
          parser.exit(2)
  
      yaml_files = {
          y: getattr(args, y)
          for y in args.contents.yaml_files
          if getattr(args, y) is not None
      }
      files = {
          y: getattr(args, y)
          for y in args.contents.files
          if getattr(args, y) is not None
      }
      pack(
          yaml_files=yaml_files,
          files=files,
          option=args.option,
          outpath=args.outpath,
      )
  
imports: import argparse
  from typing import Type
  from espnet2.main_funcs.pack_funcs import pack
label_desc: Use image node_id 3 for calling a global function with example usage: main(cmd) without return types